A mathematical model of reservoir sediment quality prediction based on land-use and erosion processes in watershed

1st International Conference on Advances in Environmental Engineering

生态环境科学

Junakova, N.^1 ; Balintova, M.^1 ; Junak, J.^1

Institute of Environmental Engineering, Faculty of Civil Engineering Technical, University of Koice, Vysokokolska 4, Koice

04200, Slovakia^1

关键词: Bottom sediments;    Management factors;    Nutrient concentrations;    Nutrient contents;    Plant nutrient uptake;    Reservoir sediments;    Sediment enrichments;    Universal soil loss equation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/92/1/012024/pdf
DOI  :  10.1088/1755-1315/92/1/012024

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The aim of this paper is to propose a mathematical model for determining of total nitrogen (N) and phosphorus (P) content in eroded soil particles with emphasis on prediction of bottom sediment quality in reservoirs. The adsorbed nutrient concentrations are calculated using the Universal Soil Loss Equation (USLE) extended by the determination of the average soil nutrient concentration in top soils. The average annual vegetation and management factor is divided into five periods of the cropping cycle. For selected plants, the average plant nutrient uptake divided into five cropping periods is also proposed. The average nutrient concentrations in eroded soil particles in adsorbed form are modified by sediment enrichment ratio to obtain the total nutrient content in transported soil particles. The model was designed for the conditions of north-eastern Slovakia. The study was carried out in the agricultural basin of the small water reservoir Klusov.